发明名称 |
DECORRELATOR STRUCTURE FOR PARAMETRIC RECONSTRUCTION OF AUDIO SIGNALS |
摘要 |
An encoding system encodes multiple audio signals (X) as a downmix signal (Y) together with wet and dry upmix coefficients (P, C). In a decoding system, a pre-multiplier (101) computes an intermediate signal (W) by mapping the downmix signal linearly in accordance with a first set of coefficients (Q); a decorrelating section (102) outputs a decorrelated signal (Z) based on the intermediate signal; a wet upmix section (103) computes a wet upmix signal by mapping the decorrelated signal linearly in accordance with the wet upmix coefficients; a dry upmix section (104) computes a dry upmix signal by mapping the downmix signal linearly in accordance with the dry upmix coefficients; a combining section (105) provides a multidimensional reconstructed signal (X) by combining the wet and dry upmix signals; and a converter (106) computes the first set of coefficients based on the wet and dry upmix coefficients and supplies this to the pre-multiplier. |
申请公布号 |
CA2926243(A1) |
申请公布日期 |
2015.04.30 |
申请号 |
CA20142926243 |
申请日期 |
2014.10.21 |
申请人 |
DOLBY INTERNATIONAL AB |
发明人 |
VILLEMOES, LARS;HIRVONEN, TONI;PURNHAGEN, HEIKO |
分类号 |
G10L19/008 |
主分类号 |
G10L19/008 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|